Well, did not work as well for the other three. One has the spring broken, one has the bearing washer broken and worn, the other is rusted in and out but the mechanism works good. Hope I can order some spare parts from HappiJac.
The o ring between the barrel and bottom of the head are also all torn apart. I believe it brakes up like that when you get them to snug when they are up, it probably squeze the o ring too much. This cause the o ring to get in between the screw and the head and it created lots of dragging.
HOpe the company will answer my request, otherwise I will not be a happy camper. Camper is only 5 years old without any abuse.